Mechanical performance under dynamic loading of rubberized asphalt mixtures with highly-porous vesicular aggregate
Abstract In volcanic regions, the use of certain abundant aggregates of scoriaceous nature with high porosity to manufacture bituminous paving mixtures is a major problem due to the excessive heterogeneity, absorption and limited strength of these aggregates. Consequently, the properties of the mixt...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-24197-3 |
| _version_ | 1798016890880131072 |
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| author | Miguel A. Franesqui Jorge Yepes Juan Gallego |
| author_facet | Miguel A. Franesqui Jorge Yepes Juan Gallego |
| author_sort | Miguel A. Franesqui |
| collection | DOAJ |
| description | Abstract In volcanic regions, the use of certain abundant aggregates of scoriaceous nature with high porosity to manufacture bituminous paving mixtures is a major problem due to the excessive heterogeneity, absorption and limited strength of these aggregates. Consequently, the properties of the mixtures often do not meet technical specifications. The aim of this research is to study the improvement of the mechanical performance of asphalt mixtures with these residual volcanic aggregates by using binders modified with rubber from end-of-life tyres, since environmental and economic requirements make it necessary to reuse both types of waste. Laboratory studies determining the compactability, dynamic stiffness, fatigue resistance and elastic constants have made it possible to characterise the mechanical performance of these mixtures during production and in service, and to compare them with conventional mixtures. It was found that the use of tyre rubber modified bitumen makes compaction somewhat more difficult, but reduces the particle size degradation of the porous aggregates and improves the mixture performance and durability, showing higher stiffness moduli and increased resistance to fatigue. |
| first_indexed | 2024-04-11T15:57:53Z |
| format | Article |
| id | doaj.art-55e78bead0554daa9f2e5289171d2a7c |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T15:57:53Z |
| publishDate | 2022-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-55e78bead0554daa9f2e5289171d2a7c2022-12-22T04:15:07ZengNature PortfolioScientific Reports2045-23222022-11-0112111310.1038/s41598-022-24197-3Mechanical performance under dynamic loading of rubberized asphalt mixtures with highly-porous vesicular aggregateMiguel A. Franesqui0Jorge Yepes1Juan Gallego2Grupo de Fabricación Integrada y Avanzada-Departamento de Ingeniería Civil, Universidad de Las Palmas de Gran Canaria (ULPGC)Departamento de Ingeniería Civil-IOCAG, Universidad de Las Palmas de Gran Canaria (ULPGC)Grupo de Investigación en Ingeniería de Carreteras, Departamento de Ingeniería del Transporte, Urbanismo y Territorio, Universidad Politécnica de Madrid (UPM)Abstract In volcanic regions, the use of certain abundant aggregates of scoriaceous nature with high porosity to manufacture bituminous paving mixtures is a major problem due to the excessive heterogeneity, absorption and limited strength of these aggregates. Consequently, the properties of the mixtures often do not meet technical specifications. The aim of this research is to study the improvement of the mechanical performance of asphalt mixtures with these residual volcanic aggregates by using binders modified with rubber from end-of-life tyres, since environmental and economic requirements make it necessary to reuse both types of waste. Laboratory studies determining the compactability, dynamic stiffness, fatigue resistance and elastic constants have made it possible to characterise the mechanical performance of these mixtures during production and in service, and to compare them with conventional mixtures. It was found that the use of tyre rubber modified bitumen makes compaction somewhat more difficult, but reduces the particle size degradation of the porous aggregates and improves the mixture performance and durability, showing higher stiffness moduli and increased resistance to fatigue.https://doi.org/10.1038/s41598-022-24197-3 |
| spellingShingle | Miguel A. Franesqui Jorge Yepes Juan Gallego Mechanical performance under dynamic loading of rubberized asphalt mixtures with highly-porous vesicular aggregate Scientific Reports |
| title | Mechanical performance under dynamic loading of rubberized asphalt mixtures with highly-porous vesicular aggregate |
| title_full | Mechanical performance under dynamic loading of rubberized asphalt mixtures with highly-porous vesicular aggregate |
| title_fullStr | Mechanical performance under dynamic loading of rubberized asphalt mixtures with highly-porous vesicular aggregate |
| title_full_unstemmed | Mechanical performance under dynamic loading of rubberized asphalt mixtures with highly-porous vesicular aggregate |
| title_short | Mechanical performance under dynamic loading of rubberized asphalt mixtures with highly-porous vesicular aggregate |
| title_sort | mechanical performance under dynamic loading of rubberized asphalt mixtures with highly porous vesicular aggregate |
| url | https://doi.org/10.1038/s41598-022-24197-3 |
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